Finding the Third Proportional to 72,178.50 and 103,971

Step by Step Solution

1. Step 1: Write the proportion equation
   72,178.50 : 103,971 = 103,971 : x
2. Step 2: Convert to fraction form
   72,178.50/103,971 = 103,971/x
3. Step 3: Cross multiply
   72,178.50x = 103,971 × 103,971
4. Step 4: Simplify right side
   72,178.50x = 10,809,968,841
5. Step 5: Solve for x
   x = 10,809,968,841/72,178.50
6. Step 6: Final answer
   x = 149,767.16